CO2-system and auxiliary data from the Northern Gulf of Mexico from samples collected during R/V Pelican cruise PE18-09 in September of 2017 (NCEI Accession 0278605)
This dataset contains chemical and physical data collected on R/V Pelican during cruise PE18-09 from 2017-09-10 to 2017-09-16. These data include depth, dissolved inorganic Carbon, pH, salinity calculated from CTD primary sensors, total alkalinity (TA), total organic Nitrogen, and water temperature. The instruments used to collect these data include CTD Sea-Bird SBE 911plus. These data were collected by James Churchill and Zhaohui Aleck Wang of Woods Hole Oceanographic Institution as part of the "NSFOCE-BSF: Collaborative Research: The Role and Mechanisms of Nuclei-induced Calcium Carbonate Precipitation in the Coastal Carbon Cycle: A First In-depth Study (Nuclei CaCO3 Precip)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2020-09-21.
The following is the text of the dataset description provided by BCO-DMO:
Dataset Description:
CO2-system and auxiliary data from the Northern Gulf of Mexico from samples collected during R/V Pelican cruise PE18-09 in September of 2017.
The following is the text of the dataset description provided by BCO-DMO:
Dataset Description:
CO2-system and auxiliary data from the Northern Gulf of Mexico from samples collected during R/V Pelican cruise PE18-09 in September of 2017.
Dataset Citation
- Cite as: Wang, Zhaohui Aleck; Churchill, James (2023). CO2-system and auxiliary data from the Northern Gulf of Mexico from samples collected during R/V Pelican cruise PE18-09 in September of 2017 (NCEI Accession 0278605). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278605. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:0278605
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor |
NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov |
Dataset Point of Contact |
NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Time Period | 2017-09-10 to 2017-09-16 |
Spatial Bounding Box Coordinates |
West: -95.5236
East: -89.262
South: 28.059
North: 29.172
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns |
Dataset Progress Status | Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed |
Supplemental Information | Acquisition Description: Discrete seawater samples and depth, temperature and salinity data were acquired using a SeaBird Electronics rosette, equipped with a CTD (Sea-Bird Electronics SBE 911 plus). Sampling for carbonate system parameters (TA, DIC and pH) commenced immediately after the recovery of the rosette to ship’s deck and employed the standard procedures described by (Dickson et al., 2007), and was followed by sampling for nutrients (TON, SRP, Silica). Samples were kept at room temperature until their analysis. Nutrient samples were collected into 15 ml plastic vials, to which 100 μL of 0.1 M HCl were added. Total alkalinity measurements were conducted at Wang’s laboratory at WHOI by a modified Gran titration procedure (Cai et al., 2010; Huang et al., 2012). The titrations were conducted potentiometrically with an automated titrator (AS-ALK2; Apollo SciTech) using an open-cell configuration and a ROSSTM combination electrode (Thermo Fisher Scientific) at a controlled temperature. The titrant (HCl, 0.07 M) concentration was determined by titration of Certified Reference Material (CRM) provided by Dr. A.G. Dickson at the Scripps Institution of Oceanography. The precision and accuracy of total alkalinity measurements is better than ± 2 μmol kg-1. The DIC concentrations were measured at Wang’s laboratory at WHOI, using a NDIR-based DIC autoanalyzer (AS-C3, Apollo SciTech), calibrated with CRM. The NDIR-based DIC analyzer (AS-C3, Apollo SciTech) uses N2 to purge CO2 from a known volume of acidified seawater sample. The CO2 in the resulting gas stream is dried using a Nafion membrane trap, which is constantly flushed with a counter-flow of dried room air. Then, the CO2 content of the gas stream is quantified by a NDIR CO2 analyzer (LI-7000, LICOR). This instrument has a precision and accuracy of better than ±2.0 μmol kg−1. Discrete pH samples were measured in Wang’s lab at WHOI using 10 cm path-length optical cells and analyzed at 25°C within a few weeks after sampling. Discrete pH measurements were based on the conventional spectrophotometric procedure using purified m-cresol purple as an indicator and 10 cm path-length optical cells (Dickson et al., 2007; Liu et al., 2011) on a HP 8453 spectrophotometer, with a precision of ±0.0004 and an accuracy of 0.001-0.002 pH units. Nutrient (Nitrate, soluble reactive phosphate and silicic acid) measurements were conducted at Lazar’s laboratory at the Inter-University Institute for oceanography in Eilat, Israel. The analysis will be conducted colorimetrically, using a Flow Injection Analyzer (FIA, LACHAT Instruments Quik-Chem 8500) (Grasshoff et al., 2009). Accuracy was obtained by calibration against a commercial, high-concentration standard (Merck). Instruments: Discrete seawater samples and depth, temperature and salinity data were acquired using a SeaBird Electronics rosette, equipped with a CTD (Sea-Bird Electronics SBE 911 plus). |
Purpose | This dataset is available to the public for a wide variety of uses including scientific research and analysis. |
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Platform keywords | NODC PLATFORM NAMES THESAURUS BCO-DMO Platform Names Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes |
Instrument keywords | NODC INSTRUMENT TYPES THESAURUS BCO-DMO Standard Instruments Global Change Master Directory (GCMD) Instrument Keywords Originator Instrument Names |
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Project keywords | BCO-DMO Standard Projects Provider Cruise IDs Provider Funding Award Information |
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Last Modified: 2024-05-31T15:15:37Z
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For questions about the information on this page, please email: ncei.info@noaa.gov